@[email protected] · Posted 03 Feb. 2021
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@Business.Upside · Posted 08 Feb. 2021
In 2015, scientists detected gravitational waves for the very first time. They used a very sensitive instrument called LIGO (Laser Interferometer Gravitational-Wave Observatory). These first gravitational waves happened when two black holes crashed into one another. The collision happened 1.3 billion years ago.